DISCOVERY OF A LOW-MASS COMPANION AROUND HR 3549
Abstract
We report the discovery of a low-mass companion to HR 3549, an A0V star surrounded by a debris disk with a warm excess detected by WISE at 22 μm (10σ significance). We imaged HR 3549 B in the L band with NAOS-CONICA, the adaptive optics infrared camera of the Very Large Telescope, in January 2013 and confirmed its common proper motion in 2015 January. The companion is at a projected separation of ≃80 AU and position angle of ≃157°, so it is orbiting well beyond the warm disk inner edge of r > 10 AU. Our age estimate for this system corresponds to a companion mass in the range 15–80 M{sub J}, spanning the brown dwarf regime, and so HR 3549 B is another recent addition to the growing list of brown dwarf desert objects with extreme mass ratios. The simultaneous presence of a warm disk and a brown dwarf around HR 3549 provides interesting empirical constraints on models of the formation of substellar companions.
- Authors:
-
- Department of Astronomy, California Institute of Technology, 1200 E. California Boulevard, MC 249-17, Pasadena, CA 91125 (United States)
- Department of Physics and Astronomy, University of Exeter, Physics Building, Stocker Road, Exeter EX4 4QL (United Kingdom)
- NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771 (United States)
- Publication Date:
- OSTI Identifier:
- 22525339
- Resource Type:
- Journal Article
- Journal Name:
- Astrophysical Journal
- Additional Journal Information:
- Journal Volume: 811; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CAMERAS; DWARF STARS; IMAGES; INFRARED RADIATION; LIMITING VALUES; MASS; OPTICS; PROPER MOTION; RESOLUTION; STAR EVOLUTION; TELESCOPES
Citation Formats
Mawet, D., David, T., Bottom, M., Hinkley, S., Stapelfeldt, K., Padgett, D., Mennesson, B., Serabyn, E., Morales, F., and Kuhn, J., E-mail: dmawet@astro.caltech.edu. DISCOVERY OF A LOW-MASS COMPANION AROUND HR 3549. United States: N. p., 2015.
Web. doi:10.1088/0004-637X/811/2/103.
Mawet, D., David, T., Bottom, M., Hinkley, S., Stapelfeldt, K., Padgett, D., Mennesson, B., Serabyn, E., Morales, F., & Kuhn, J., E-mail: dmawet@astro.caltech.edu. DISCOVERY OF A LOW-MASS COMPANION AROUND HR 3549. United States. https://doi.org/10.1088/0004-637X/811/2/103
Mawet, D., David, T., Bottom, M., Hinkley, S., Stapelfeldt, K., Padgett, D., Mennesson, B., Serabyn, E., Morales, F., and Kuhn, J., E-mail: dmawet@astro.caltech.edu. 2015.
"DISCOVERY OF A LOW-MASS COMPANION AROUND HR 3549". United States. https://doi.org/10.1088/0004-637X/811/2/103.
@article{osti_22525339,
title = {DISCOVERY OF A LOW-MASS COMPANION AROUND HR 3549},
author = {Mawet, D. and David, T. and Bottom, M. and Hinkley, S. and Stapelfeldt, K. and Padgett, D. and Mennesson, B. and Serabyn, E. and Morales, F. and Kuhn, J., E-mail: dmawet@astro.caltech.edu},
abstractNote = {We report the discovery of a low-mass companion to HR 3549, an A0V star surrounded by a debris disk with a warm excess detected by WISE at 22 μm (10σ significance). We imaged HR 3549 B in the L band with NAOS-CONICA, the adaptive optics infrared camera of the Very Large Telescope, in January 2013 and confirmed its common proper motion in 2015 January. The companion is at a projected separation of ≃80 AU and position angle of ≃157°, so it is orbiting well beyond the warm disk inner edge of r > 10 AU. Our age estimate for this system corresponds to a companion mass in the range 15–80 M{sub J}, spanning the brown dwarf regime, and so HR 3549 B is another recent addition to the growing list of brown dwarf desert objects with extreme mass ratios. The simultaneous presence of a warm disk and a brown dwarf around HR 3549 provides interesting empirical constraints on models of the formation of substellar companions.},
doi = {10.1088/0004-637X/811/2/103},
url = {https://www.osti.gov/biblio/22525339},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 2,
volume = 811,
place = {United States},
year = {Thu Oct 01 00:00:00 EDT 2015},
month = {Thu Oct 01 00:00:00 EDT 2015}
}